Don't tell me chickens aren't smart!

Yesterday I went into the coops to dig out some manure for our new raised bed. I dressed for the occasion, in the same boots and gloves that I wear when I catch and butcher roosters. After I'd been in the first coop a few minutes, working, I guess one of the chickens noticed my attire, because they started getting all agitated. It went from pen to pen, and I didn't know why at first; I thought there was a predator, like a dog, stalking the property. They settled down when they realized I wasn't chasing them, but the hens broke two eggs in the nests in the process! Guess I should wear my gear more often!